SHIELD™ XPLUS 5755 FAST, PRACTICAL AND ABSOLELY RELIABLE. The wait is finally an end to our industry-leading XPlus key system is finally introduced for frame locks. XPlus is more comfortable to use and even safer: a real win-win situation. Furthermore, it allows OEM frame locks to be integrated into the One-Key security system using our highest quality Granite XPlus series shackle, folding and chain locks. Perfect for the new generation of electric bikes that conquer our cities.